From: Brian Candler <b.candler@...>
Date: 2010-05-19T05:58:28+09:00
Subject: Re: (Net::SSH::HostKeyMismatch

Kamal Ahmed wrote:
> I am getting an error:
> 
> /sw/lib/ruby/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-
> verifier.rb:47:in `process_cache_miss': fingerprint da:
> 34:2e:a6:87:c4:c8:49:0e:a1:8e:39:fd:fc:ef:e7 does not match for <IP
> address> (Net::SSH::HostKeyMismatch)
> 
> 
> Is there a way to Ignore HostKeyMismatch ?

Yes - see Net::SSH::Verifiers::Null, which should be selected by 
:paranoid=>false.

However, Net::SSH version 1.1.1 is ancient (May 2007), so if it doesn't 
work as you expect, that's probably why. Net::SSH 1.1.4 is a year more 
recent from the 1.x train, but if I were you I'd switch to Net::SSH 2. 
The parameters to Net::SSH.start have changed, but I found that the rest 
of my code worked fine.

Having said all that, it would be better simply to remove the offending 
entry from .ssh/known_hosts. Net::SSH is telling you that the host 
you're connecting to is different from the one you previously connected 
to (which is true, since you reinstalled it)
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